[marc-o-matic]

Engine idling,blower on high,mode switch to panel,temp lever full cold.
Press and hold rear wipe and wash buttons simultaneously for 5 seconds
untill all led's illuminate.
Rear wiper and intermitent wiper led's will flash during calibration.
Also a/c and recirc. butons will flash alternately during test.
After about a minute if only rear wiper led is flashing system calibration is successful.

HTH